Simo, AMwakikunga, Bonex WMaaza, M2019-02-042019-02-042015-06Simo, A., Mwakikunga, B. and Maaza, M. 2015. One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors. Sensors & Transducers Journal, vol. 189(6): 143-1492306-85151726-5479http://www.sensorsportal.com/HTML/DIGEST/P_2682.htmhttp://hdl.handle.net/10204/10679Copyright: 2015 IFSA. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version can be downloaded from: http://www.sensorsportal.com/HTML/DIGEST/P_2682.htmIn relation to hydrogen (H2) economy in general and gas sensing in particular, an extensive set of one dimensional (1-D) nano-scaled oxide materials are being investigated as ideal candidates for potential gas sensing applications. This is correlated to their set of singular surface characteristics, shape anisotropy and readiness for integrated devices. Nanostructures of well- established gas sensing materials such as Tin Oxide (SnO2), Zinc Oxide (ZnO), Indium (III) Oxide (In2O3), and Tungsten Trioxide (WO3) have shown higher sensitivity and gas selectivity, quicker response, faster time recovery, as well as an enhanced capability to detect gases at low concentrations. While the overall sensing characteristics of these so called 1-D nanomaterials are superior, they are efficient at high temperature; generally above 200 0C. This operational impediment results in device complexities in integration that limit their technological applications, specifically in their miniaturized arrangements. Unfortunately, for room temperature applications, there is a necessity to dope the above mentioned nano-scaled oxides with noble metals such as Platinum (Pt), Palladium (Pd), Gold (Au), Ruthenium (Ru). This comes at a cost. This communication reports, for the first time, on the room temperature enhanced H2 sensing properties of a specific phase of pure Vanadium Dioxide (VO2) phase A in their nanobelt form. The relatively observed large H2 room temperature sensing in this Mott type specific oxide seems to reach values as low as 14 ppm H2 which makes it an ideal gas sensing in H2 fuelled systems.enDepletion layerHydrogen gasRoom temperatureSensorsVanadium dioxideArticleSimo, A., Mwakikunga, B. W., & Maaza, M. (2015). One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors. http://hdl.handle.net/10204/10679Simo, A, Bonex W Mwakikunga, and M Maaza "One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors." (2015) http://hdl.handle.net/10204/10679Simo A, Mwakikunga BW, Maaza M. One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors. 2015; http://hdl.handle.net/10204/10679.TY - Article AU - Simo, A AU - Mwakikunga, Bonex W AU - Maaza, M AB - In relation to hydrogen (H2) economy in general and gas sensing in particular, an extensive set of one dimensional (1-D) nano-scaled oxide materials are being investigated as ideal candidates for potential gas sensing applications. This is correlated to their set of singular surface characteristics, shape anisotropy and readiness for integrated devices. Nanostructures of well- established gas sensing materials such as Tin Oxide (SnO2), Zinc Oxide (ZnO), Indium (III) Oxide (In2O3), and Tungsten Trioxide (WO3) have shown higher sensitivity and gas selectivity, quicker response, faster time recovery, as well as an enhanced capability to detect gases at low concentrations. While the overall sensing characteristics of these so called 1-D nanomaterials are superior, they are efficient at high temperature; generally above 200 0C. This operational impediment results in device complexities in integration that limit their technological applications, specifically in their miniaturized arrangements. Unfortunately, for room temperature applications, there is a necessity to dope the above mentioned nano-scaled oxides with noble metals such as Platinum (Pt), Palladium (Pd), Gold (Au), Ruthenium (Ru). This comes at a cost. This communication reports, for the first time, on the room temperature enhanced H2 sensing properties of a specific phase of pure Vanadium Dioxide (VO2) phase A in their nanobelt form. The relatively observed large H2 room temperature sensing in this Mott type specific oxide seems to reach values as low as 14 ppm H2 which makes it an ideal gas sensing in H2 fuelled systems. DA - 2015-06 DB - ResearchSpace DP - CSIR KW - Depletion layer KW - Hydrogen gas KW - Room temperature KW - Sensors KW - Vanadium dioxide LK - https://researchspace.csir.co.za PY - 2015 SM - 2306-8515 SM - 1726-5479 T1 - One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors TI - One-Dimensional Vanadium Dioxide nanostructures for room temperature hydrogen sensors UR - http://hdl.handle.net/10204/10679 ER -